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Published byMelina Carter Modified over 9 years ago
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Handwriting analysis ASISTM Project Forensic Investigations
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Characteristics Handwriting experts look at 12 characteristics of a person’s writing. They try and compare a sample of the suspect’s writing to a known original.
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On first glance the forgery is quite a good copy. Original Forgery
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Lets take a closer look!
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Line quality Are the lines smooth or shaky? Original Forgery
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Spacing - words and letters Is the spacing size consistent?
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Ratio - height, width, size Original Forgery Are the letters consistent in shape & size?
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Pen lifts and separation Are the pen lifts consistent? Original Forgery
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Connecting strokes Compare how letters are linked. Original Forgery
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Beginning and ending strokes Are the strokes straight, curled, long? Original Forgery
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Unusual letter formation Unusual letters - letters written backwards, tails OriginalForgery
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Shading or pen pressure Differences in shading = differences in pen pressure Original Forgery
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Slant Is the slant or angle of the letters consistent? Original Forgery
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Baseline habits Does the writing go below the line? There is a tendency for the top author (original) to write above the line while the forgery tends to be on the line. Original Forgery
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Flourishes and embellishments Any fancy letters? Original Forgery
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Diacritic placement - cross i, dot t Is the line on the “t” in proportion? Are the “i’s” dotted left or right? Original Forgery The i dot and t cross tend to the right of the letter. The i dot is varied. The t cross is even. The form of the letter t is wider at the base.
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References Deslich, B & Funkhouser, J. 2005 Forensic Science for High School. Kendall/Hunt Publishing Company, US Writing samples from J Dook & T. Hutchison, scanned into Adobe Photoshop at 400dpi. Graphic design for slides by T. Hutchison, DUIT Multimedia, UWA
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